Pentecost (50 days after Easter Day) is when we celebrate the Holy Spirit being sent down upon the disciples.  Pentecost is considered to be the birth of the Christian Church.  On Pentecost, we will be using the red altar frontal, pulpit falls, bookmarks, and clergy stoles, as red is the liturgical colour for festivals of the Holy Spirit.  We so rarely get to use red that it is a treat to do so!